Rat trap



variation in atmospheric pressure is a fdetep Patented I July 3, 1928.

mm) m. Bunch, or woven, amw mushy.

' rownnn TmE ruse.

Applicetioii filed August}, 1924. Serial No. 730,291.

(GRANTED numeral: rgqvlszons or Trim icror 1.13011 3, 1883, 22 Sm. L, 625.

The invention described hereinfmay be manufaeturecl abd Used by 0 1" for the Gov- "ernmeut for governmental purposes 1 Without the payment to me of any royalty thereon.

he subject oft-his intention is a pow" er In high angle firingagainst aircraft the mining factor in Tegul'atihg the vehtiug of the-gases generated by the burningylpowder ofthe ti'liie train. {As the exterinal pressure is reducjetl the gases are vented at more pressure in the fuse ahd allowing the powder pressujre and the iriegularity of the combusr tionof the powder -tif nettaih, it follows that According: the" present iuyentioh, the,

iuse or cover is designed to eo nfiu e within itselflall of the gases generated by the vburnihg powder train, thus e11eatii1 uniform co'ndition switl' in the fuse regal? less "of et- Qmosphe'ric pressure. The internal pressure] Within the fuse will beta Constantly rising quantity and will eonsequently pi'ovide tor. slower combustion of; the powder tram,

thereby permitting reduction to but a .sin-

glie'ringto obtain the burni g time required in a fuse ofthis character. Other equally important objects eudjadyenta fes are: to provide epowdei time fuse including a novel means for obtaining gas ObturatiOn Without interferring with the r.apid setting of thewfuseyto construct the setting meehhniem so that the tendencyto j obtu ate willbecome greater the internal e pressure isyymc reasecly to provide a simple clex iee ope rableon setback for lockingwthe fect oifiehzinges in temperature;

To these stud other ends, my invention heat insulating lln ng for minimizing the efmeme of machine screws ing a p a'rt of this specification.

A practical embodiment of my ihvefition is illustrated in the accompanying drawings, in which,

Fig. 1 a longitudinal sectional 'Vie'w bf m -lI DPT OXEd fuse; and y y *ig. 2 a similer view i'll'ustr'atih'gan alternate method of carrying out the invention. r

Referring to the drawings by numeialsbf reference: of the tiimetrain to burn moterapidly. O a'eeo'unt o'f the variations lnflfetmospherle According to the ihveution, I provide a suitable fuse-leasing comprising a body 10, forlihed with an annular fiahge 11, 0h wfvhich is seated a hollow fuse head or cover 12. The body is "formed with in groove 13 in which is placed ms'plit tihgl l riot to assemblinrof the easing. When expanded by ism partially enga e it registering groove 16, on the iilside of the cover and thereby Serves tohbld the coverin place. k i

The upper and lower surfaces ofth'e ring are (Seated with "a t arid ehistie I'Iilftei'ial 1.7, suehes felt, soft solder, or rubberto effectutlly seal the joint. v The body is formed with a suceession of eohneeged ii regulaif bores extending celitifally thereo from ifroiitto "rear vwild divided by tei'rieertion ofa disc 'whiehiis Giimped into place.

To the m of the isc f1s is y a booster charge 19, confined by a base plug 20, which is belitrel-ly apertured to receive a. coyeied discm, fo'r pre'v euti eseape of the booster ehai' e. A passage 3%, loaded with a cumbustible material which ma be a. portion of the booster cha 'ge, extends to a: powdeipellet 23, Whiehis "disposefdin a "recess in the io'rwa'rd fazoee e the body 'edjeoeht its The zise plug 20 ma be prob ri lm Y Vided with a filling hole and the hole shitably elosedlbye'thfeedjed pih after assembly. Theforw vard face oft-he body is covered bye felt Washer 251; on which is seated a. time ring in set pbsitlon to secure the fuse Teasing. ihhrigidessembly; and tolinclude a time 25, formed with a stem 26, the freeend of which is threaded for the reeeptioh pi ex11112 27 assembled from the rear and adapted to rotatably hold thetime ringto the body; Embraeipg the. em "2'6 is y Patented July 3, 1928.

u-N1 TED' 'STIATEVS'IPATENT OFFICE. 1 a

CHARLES L; CESSNA, or roar DODGE, IOWA.

RAT TRAP.

Application: ma Ma 925, Serial no. 27,904. Rcnewd February 4, 1928.

My invention relatesto improvements in traps for catchingmice, rats, or the like.

'An important object of the invention isto provide a trap of theabove mentioned character which is so constructed that the mov section and parts removed.

able part or a jaw "may be automatically locked in the open position by swinging the Jaw to such position, without the necessity of placing the. fingers Within or beneath the movable part, or otherwise manipulating the locking elements. i j i A further object of the invention is to provide a trap of the above mentioned character which will'cover the caught part of the animal, thus shieldingthe same from view. a

v further object of theinvention is to projvide a trap of the above mentioned character the major part of which may be formed of sheet metal, whereby the trap may becon- 'structed cheaply. i j

Other objects and, advantages ofthe invention will be apparent during the course of the following description. i

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to; designate, like parts throughout the same, i Figure 1 is a perspective view, from the rear end of the trap, showing the movable closed, H Figure 2 is a similar view, from the front end of the trap showing the movable jaw open,

Figure 3 is a centralvertical longitudinal section through the trap, showing the movable jaw closed,

Figure 4 is a similar view showing. the movable jaw open, i

Figure 5 is an enlarged vertical longitudinal section through the rear end of the movable jaw extension, and,

Figure 6 is a plan view of the base and trigger and associated elements, parts in In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 16 designates a flat base, preferably formed of sheet metal, provided with longitudinal and transverse flanges 11 and 12. The forward end of the base 10 constitutes the stationary iawelf the'trap. Bjgidly mounted upon the '18, integral therewith.

upper surface of the stationary jaw is a receptable 1 3, for thereception of bait, such as cheese. j

The numerall l designates an n per. jaw, embodyinga top 15, carrying longitudinal and transverse flanges 16 and 17. Thismovable jaw carries an extension This extension is stiffenedby having its outer. edges bent into laterally extending flanges 19.. The extension and movable jaw are formed integral and the same-are preferably stamped from one section of sheet metal. The movable jaw and extension are disposed ata right angle from each other, and a common longitudinal slot 20 is formed through the same, and this slot is stamped from the material, and reinforcing flanges 21 are produced, extending along the edges of the slot, as shown.

spending The flanges 16 are provided at their inner ends with apertured knuckles 22, for the reception of a transverse pin 23, and this pin extends through knuckles24c, formed upon the flangesll. It is thus seen that the jaw is pivoted to the base or stationary jaw, for vertical swinging movement.

A tongue 25 is struck up from .the bottom of thebase, and this tongue is apertured for receivlng the transverse pin;23.

The numeral 27 designates a trigger, as a whole, including a bodyzportion 28, carrying depending knuckles 29, pivoted upon the pin 23. The knuckles 29 are confined between thegtongue 25 and one flange 11. The body portion of the trigger 28 is provided with a forward ring or frame 30, and is equipped with an upstanding rearwardly curved tongue 31, having a notch 32. The trigger embodies a rear portion or tail 33. which is heavier than the forward or ring portion 30, and hence servesto retain the ring portion elevated. The upper jaw is swung downwardly by a spring 34, which is coiled about the pin 23, upon one side of the tongue 25. One end of this spring engages the rear end of the base 10 while the opposite end of the spring engages'the extension 18. The

function of this spring is to throw the mov- 

